Shaft-bearing.



SHAFT BEARING.

(Applicatin led Dec. 18, 1699.)

(No Model.)

limitan Sterns ArnNr FFICE.

JOHN F. APPLEBY, OF CHICAGO, ILLINOIS.

SHAFT? BEARING.

SPECIFICATION forming part of Letters Patent No. 667,644, dated February5, 1901.

Application led December 18, 1899. Serial No. 740.709. (No model.)

To Cl/ZZ whom, t may concern:

Be it known that I, JOHN F. APPLEBY, of Chicago, in the county of Cookand State of Illinois, have invented certain new and usefulImprovementsin Shaft-Bearings, of which the following is a specification.

This invention has relation to the provision of a convenientshaft-bearing for machines wherein some connecting and supportingframework is essential; and the object of the invention is to simplifyand cheapen the construction of such bearings.

I have shown myinvention as embodied in a part of a mowing-machine frameand have shown in the accompanying drawings that portion of the framewhich supports the gearing communicating motion to the pitman.

In said drawings, Figure l is a perspective view of the gear-casting ofa mowing-machine frame, partlyin broken section,with the gearing inplace and the pitman broken away. Fig. 2 isa plan view, partly brokenaway, of the front end of said frame, showing the shaft in place, butwith the crank-disk and pitman removed. Figs. 8 and 4 arecross-sectional views on lines 3 3 and 4 1l of Fig. 2, and Fig. 5 is aplan view of the sleeve forming a bearing for the shaft.

In said drawings, A represents a frame-casting, if desired in one piece,having a tubular portion B to contain the pitman-driving shaft C. Thistubular portion being quite long and the casting heavy, if it were boredtrue to form a proper bearing for the shaft the expense would beconsiderable, and it is to avoid this expensive fitting that myinvention is devised. The front end of said tubular portion is cored ormolded out to afford a recess for a sleeve D. (Shown in Fig. 5.) Saidsleeve is slotted longitudinally, as shown at d, and its central portionis swelled or bulged out, as at D', and such swelled or bulged portionmay be rectangular in its eX- ternal contour. The casting will bechambered to receive this enlarged portion and form abutments therefor,which will center the sleeve and prevent its working endwise, while atthe same time it Will permit said sleeve to be iixed in alinement withthe bearing at the rear end of the tubular portion which supports theinner end of the shaft next to the pinion E. In order to fix the sleevein sleeve or bushing near its ends and on opposite sides of its centralenlargement. In order to hold the adjustingscrews in place, nuts f g areprovided, which bear on the outside of the casting, which latter isprovided with the bolt-apertures H, whereby the casting A is connectedwith the framework of the machine. An aperture I is also provided forapplying an oil-cup to lubricate the bearing.

From the foregoing description it will be obvious that the interior ofthe tubular casting may be roughly bored and the sleeve or bushinginserted and adjusted in position to form a bearing for the shaft bymanipulating the set-screws. After the shaft is in place the crank-diskJ is applied and the pitman K connected to the Wrist-pin of said disk.As the wear proceeds the bearing may be tightened by turning up theset-screws,

Vthus compressing the sleeve or bushing and at the same time preservingit in proper alinement.

I am aware, of course, that split bushings are old and that clampingdevices for contracting a split bushing are common; but my inventionconsist-s in the combination, with the frame member or casting, of abearingsleeve of the type described with means for fixing and adjustingsaid sleeve in position, as hereinafter pointed out in the claims.

I claim- 1. The combination with a frame-casting having a passagetherethrough provided in the casting thereof, of a split sleeve orbushing located within said passage and having a bearing intermediateits ends upon the wall of said passage, said sleeve or bushing beingadapted to afford a shaft-bearing, and adj listing-screws extendingthrough the Walls of said frame-casting and adapted to im pinge saidsleeve on opposite sides of its central bearing, whereby it may beadjusted to proper alinement and compressed to compensate for wear,substantially as described.

IOO

ment with angular side walls adapted to said chamber, setscrews passingthrough said frame and having their inner ends adapted to impin ge uponthe ends of the sleeve with nuts through which said set-screws arethreaded, said nuts being located externally and internally of the framerespectively, and the internally-located nuts being confined againstrotation, substantially as described.

JOHN F. APPLEBY.

Witnesses:

C. C. LINTHIGUM, FREDERICK C. GOODWIN.

